CVE-2026-15687— Path traversal via non-tar copyDirectoryFromPod
Quick assessment
Affected
Kubernetes kubernetes-client/java
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Kubernetes java是Kubernetes组织开源的一种跨平台编程语言运行环境。 Kubernetes java 10.0.0版本至25.0.1之前版本和26.0.0版本存在路径遍历漏洞，该漏洞源于通过非tar方式copyDirectoryFromPod操作时路径遍历，可能导致受破坏的Pod在客户端计算机任意位置创建新文件。
Possible ATT&CK Techniques 2 AI
T1530 · Data from Cloud Storage T1083 · File and Directory DiscoveryAffected Version Matrix 5
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Kubernetes | kubernetes-client/java | 10.0.0< 25.0.1 |
affected |
26.0.0 |
affected | ||
25.0.1 |
unaffected | ||
26.0.1 |
unaffected | ||
27.0.0 |
unaffected |
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I. Basic Information for CVE-2026-15687
Vulnerability Information
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Vulnerability Title
Path traversal via non-tar copyDirectoryFromPod
Source: CVE Program / CVE List V5
Vulnerability Description
A security issue was discovered in the Kubernetes Java client library where a compromised pod may be able to create new files in arbitrary locations on the client machine executing copy operations via non-tar copyDirectoryFromPod when enableTarCompressing is false.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Kubernetes java 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubernetes java是Kubernetes组织开源的一种跨平台编程语言运行环境。 Kubernetes java 10.0.0版本至25.0.1之前版本和26.0.0版本存在路径遍历漏洞，该漏洞源于通过非tar方式copyDirectoryFromPod操作时路径遍历，可能导致受破坏的Pod在客户端计算机任意位置创建新文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Kubernetes | kubernetes-client/java | 10.0.0 ~ 25.0.1 | - |
|
II. Public POCs for CVE-2026-15687
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-15687 (1)
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V. Comments for CVE-2026-15687
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